“For the most part, LGBT older adults experience the same types of abuse as non-LGBT elders. However, there are additional ways LGBT older adults can be victimized and more reasons why LGBT older adults may 'accept' this victimization.”
This comprehensive article, written for abuse professionals, discusses warning signs for LGBT elder abuse. The article covers such topics as financial abuse, threats of "outing" and isolation, among others. It also provides resource suggestions.
Source: FORGE Transgender Aging Network (USA); National Resource Center on LGBT Aging (USA)