Terri asked me to comment on your continuing concerns.  As she has already indicated, your risk of STI from frottage- clothed or otherwise is virtually zero. Terri has already commented in herpes.  for other STIs without penetration, there is simply no risk.  As for your specific questions:

1. See above, like frottage of any sort, mutual masturbation is also a virtually no risk event.  No reason for concern, no reason for testing.

2. Urinary frequency I snot an STI symptoms, it is a sign of anxiety.

3.  Nothing you have said in this post, or your earlier questions suggests an STI, nor any reason not to have sex with your wife. 

4.  I see no need for STI testing of any sort.  You are overthinking this and clearly feeling guilty.  You need to get by this. 

I hope these comments help.  EWH

I understand that this may have been your bare penis and that your partner was wearing only her G-string.  Still no risk.

I would add however that you seem to be working to convince yourself that this was risky.  In your question above you state "I think there was some clothed frottage and potentially unclothed frottage, at least my pants may have been down and she still had her gstring on (not that a gstring covers a lot of skin)." but now you seem more convinced (although I am not).  This suggests to me that your anxiety and guilt is amplifying what is going on and suggest that rather than looking for disease, you might benefit by talking this through with a professional counselor or mental health professional.  there is no STD risk from the activities you describe.  EWH

Whatever is going on here is unrelated to the events you describe above and is not consistent with herpes related to the sorts of exposures you describe.  I would suggest you take your daughter to the doctor and find out what she has. 

This will end this thread which has gone beyond the allotted three responses per question. The thread will be closed in a few hours.  eWH