The egg laying is likely a glitch from the vet visit. However, I would give her 1 Caltrate with D3 once a day for 3 days.
Call your vet about egg withdrawal on the Baytril. Vets often prescribe it off-label.
Egg withdrawal timelines for Baytril seem to be hard to nail down, so hopefully...
You really should not have to be repeating the removing of the scab and cleaning out the foot. If it left a hole, then pack with the neosporin, wrap and let her go for a day or so. Do re-check the wound to make sure it's healing.
I think I would try soaking, then see if those will loosen up.
Before you do any cutting, try a more non-invasive approach. https://www.tillysnest.com/2015/12/non-surgical-bumblefoot-treatment-html/
You may have to do a soaking a couple of days in a row.
After you get the...