Deity worship by Vaishnavis.
Srila Prabhupada’s letter to Amsu das on 13 August 1974:
“Regarding the worship of our Gaura Nitai by women pujaris, we worship Lord Chaitanya in His householder life when He was with His wife, and not as a sannyasi. So, it is alright for women to do this service. But, besides this, service is spiritual and there can be no material designation. In Bhagavad-gita it is stated by Lord Krsna: striyo vaisyas tatha sudras te’pi yanti param gatim. The principle is that everyone who is properly initiated and following the rules and regulations can worship. This activity cannot [be] on the material platform.“
the same reasoning Srila Prabhupada applied to deity whorship may be applied to female gurus but if one has prema bhakti then they are acharya