You and the daughter need to write up a contract of what is to be cleaned and the frequency. Definitely charge more you are worth it! Inform the daughter that you are the professional and she needs to let you do your job. If she has time to follow you... more
Get personal references. Ask if insured. Have contact info.
I want to know if a home has bedbugs!
It's not necessary to have both in the same room. The purifier helps to remove contaminants from the air, while the oil diffuser is for aroma. Some essential oils have healing properties, but they do not remove contaminants from the air.