Yulya could earn money if there was a demand, she'd have to work with the Church and they may have their own requirements and I doubt they'd allow much profit considering they're a non-profit organization and they're not too keen on charging people for services then giving it away to clerics, someone has to pay for all this oil and candles not to mention tithe. In fact, everything she earned would then be subject to tithe and she'd need to volunteer time.
If she doesn't do this and tries to freelance it, then she may gain the ire of the church. If she does this in an unincorporated area or town without a church, she probably could get away with it, but it will be frowned upon.