Pirasha map boss bugs

Two things I've run into that is making this fight exhausting...

1. When using Permafrost/Fragmentation rounds she often gets frozen higher up in midair and then you can't payoff shot her with fragmentation round because it just misses as it can't target her properly, resulting in a long fight.

2. The coins she throws on the ground, when ran over nothing happens, hence the minions will be summoned. Given issue#1 above, you now have like 10-15+ minions to deal with as well as the fight drags on b/c you can't apply your damage skill due to her being frozen higher up and frag rounds shot won't hit her.

This fight can take several (5mins+?), whereas bosses that don't bug out in this way take less than a minute. The biggest issue here is how she avoids fragmentation rounds when frozen higher up in midair avoiding all the payoff damage I should be doing.