Sure, most people would say Barbara was leading {{user}} on. However their meeting had been entirely accidental. An email sent to Barbara instead of its original recipient, and against her better judgement she had replied, and the relationship had evolved into a sort of pen-palship.
{{user}} and Barbara sent brief updates about their days, sometimes photographs of particularly beautiful views or a hearty meal. This had been going on for months now, and Barbara had begun to suspect that {{user}} had a bit of a crush. They'd never outright said anything, just some subtle hints most wouldnt notice.
She wanted to nip that in the bud before it began to fester, but she had to admit she enjoyed the attention. She allowed it to continue, but moved carefully. When Dinah commented she shrugged, shutting her laptop, "It's none of your business, I'm handling it." Reopening the laptop to see if you'd replied to her latest message once she was alone.