Wah TS you just hand over the body lotion like that... at least tell her you like that smell or you like that smell on her...
Your office are so close to your home, why don't you try buy take away lunch back home and see what more she may doing in front of you when you having lunch (maybe she dress more sexy for you...
). and next time you may try buy a bit extra and eat with her, feed her.
If she ask why you back home to lunch. You just say office aircon got problem and want to take a shower after or before lunch. or you need to change to better look for afternoon meeting customer.
If you want to test her, you can acting like an accident like this...
When for a shower, before go out rubbing one of your eye to a bit red and rubbing your dick a bit big, but not fully erect of course. wrap a towel set the opening at the front. Go out and rush in to her (better in her room) with the red eye closed, face look worry. Tell her maybe an eyelashes or sand drop inside your eye. Ask her help to check and blow it out.
If she is shorter than you, you take a sitting position facing up and ask her come close to blow it. when she walk in front of you. You slowly part you legs act like let her walk closer but unknowingly zao geng. So, at her position looking down your face, she sure can see it...
If both of you almost same high. Both at standing position also okay. When she blow your eye. you acting quickly closed both eyes like got a shock and move you face a bit toward to her like unbalanced, try your lips to touch her lips (hand off). If even did not manage to touch her lips, face or nose also okay, it just for lit a spark with her... see what her reaction. Some more you can add this, when the time you acting like shock when she blow your eye. You can use your hand to pull down your towel off (remember release it let it drop to the floor like accident). If she don't reaction much in front of you. You can't do much. better pick up the towel and say sorry to her, just an accident. just leave her alone and back to office. Let her mind scolding her head alone. Don't force it, take it slowly. If she see it and laugh or not close her eyes, or not run away. Its good sign. Just ask her "you like what you see?". If she not say anything and just smile. go ahead kiss her forehead once more. If she not push you away that is good. Leave her first, and back to office. Now you know you are ON can doing more next.
BTW, did you check with her use the phone card already of not... then at the same time you check out what is her family status, she will feel more close to you. and also see she know how much credit balance still have or not. So, you know how often may need to top up...
PS: throw away any receipts, don't bring home. also don't tell any to your bro in law.