Does your dd bank at the same bank as you?
@Lain tried to explain this to me before but I never did much beyond opening my own Venmo.
First rule: DO NOT do P2P (using PayPal, Venmo, etc.) between family/relatives/people who share the same last name or address using Amex cards. There are lots of DPs that Amex will freeze your accounts and hit you with a mini-FR.
2: Venmo payments make sense on the CIP because even though Venmo charges a 3% fee to use credit cards, the CIP earns 3x UR on the payment and the fee. And more importantly, Chase doesn't care about P2P payments between family/relatives/people who share the same last name or address.
3: Venmo cares somewhat if you're using their platform for MS, and will freeze or close your account (thus tying up any of your funds they're holding) if they think you're doing something shady. Venmo has tightened restrictions to limit users to adding only 4 credit/debit cards to your account in a rolling 6 months period. This limits the velocity and utility of liquidating certain MCGC/VGC gift cards as debit (and therefore no fee) through Venmo. Venmo also has limits on amounts transferred and withdrawn per week unless you take steps to verify your account.
4: Think of Venmo as only a conduit. If you are doing P2P between you and DD -- say you send $1k for "text books and lab fees" or "winter clothes shopping" or "new computer" to DD via Venmo, DO NOT have DD send the $1k back to you via the same conduit (i.e., Venmo). Have her withdraw the $1k to her bank, then write you a check or do an electronic transfer. Once the funds are withdrawn from DD's Venmo account, Venmo has no idea where those funds go next. Doesn't matter if DD has the same bank as you or not -- as long as she can get the money back to you to pay your CC bill and as long as she doesn't use Venmo to transfer the funds back to you.
5: It's a good idea to "season" your Venmo account to establish some pattern or history of transfers, so the occasional $500 or $2000 doesn't look like a big deal. For your college aged DD, it looks totally natural for a caring mom to send money for textbooks, lab fees, club dues, tuition, shopping, fun, ski trips, spring break, etc. Be creative. Use those emojis.